340645130621 has 8 divisors (see below), whose sum is σ = 343340703744. Its totient is φ = 337949766000.

The previous prime is 340645130599. The next prime is 340645130629. The reversal of 340645130621 is 126031546043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340645130621 - 2¹⁸ = 340644868477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340645130629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5908691 + ... + 5966063.

It is an arithmetic number, because the mean of its divisors is an integer number (42917587968).

Almost surely, 2^340645130621 is an apocalyptic number.

It is an amenable number.

340645130621 is a deficient number, since it is larger than the sum of its proper divisors (2695573123).

340645130621 is a wasteful number, since it uses less digits than its factorization.

340645130621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104251.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 340645130621 its reverse (126031546043), we get a palindrome (466676676664).

The spelling of 340645130621 in words is "three hundred forty billion, six hundred forty-five million, one hundred thirty thousand, six hundred twenty-one".